用STM32的CubiIDE，想将常量数据放在闪存末尾的独立区域。但没有成功。该值存储在向量表之后的某个位置，并且在0x8003000处也有存储。因此，在链接器文件中，添加了如下。代码中 const uint32_t data attribute ((section(".udata"))) = 0x1234;如何让变量仅存储在0x8003000？
MEMORY
{
RAM (xrw) : ORIGIN = 0x20000000 , LENGTH = 4K
ROM (rx) : ORIGIN = 0x8000000 , LENGTH = 12K
DAT (r) : ORIGIN = 0x8000000+12K , LENGTH = 4K
}
/* Sections */
SECTIONS
{
/* The startup code into "ROM" Rom type memory */
.isr_vector :
{
. = ALIGN(4);
KEEP(*(.isr_vector)) /* Startup code */
. = ALIGN(4);
} >ROM
/* The program code and other data into "ROM" Rom type memory */
.text :
{
. = ALIGN(4);
*(.text) /* .text sections (code) */
*(.text*) /* .text* sections (code) */
*(.glue_7) /* glue arm to thumb code */
*(.glue_7t) /* glue thumb to arm code */
*(.eh_frame)
KEEP (*(.init))
KEEP (*(.fini))
. = ALIGN(4);
_etext = .; /* define a global symbols at end of code */
} >ROM
.udata :
{
. = ALIGN(4);
_udata = .;
*(.udata)
*(.udata*)
. = ALIGN(4);
KEEP (*(.udata))
} >DAT
}
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